People who say "I was making GPUs before them, and they built their own GPUs that behave like GPUs so they copied me" don't understand how stuff is built. The hard part in engineering is not "imagining the high-level concept", it's actually making it work. Even if you can open electronics and study it to design and build your own, it requires a lot of expertise. And if you manage to do it, then you are an expert, period.

I'm sure many people find comfort in saying stuff like "You know what? I was a bit of a visionary because when I saw the first personal computer, I imagined that it would be cool if it could be orders of magnitudes faster and smaller such that it fits in a pocket". As if that was the hard part.

Typically, too many people spend a lot of time talking about UI and stuff like "unpacking" as if that was the most important part. But usually that's because they have no idea about how it works under the hood, so the only thing to discuss is whether the round edges are great or not.